mirror of
https://github.com/raspberrypi/linux.git
synced 2025-12-06 01:49:46 +00:00
89c0af71c9
See: https://forum.libreelec.tv/thread/25427-le-10-0-2-on-rpi4-not-playing-files-that-10-0-1-had-no-problems-with/ The issue is that kodi changes hdmi mode to 3840x2160@24 initially with "max bcp=8" After decoding the first frame it changes property to "max bpc=12". Now vc4_hdmi_encoder_compute_config chooses vc4_state->output_bpc = 12 with output_format=VC4_HDMI_OUTPUT_RGB This requires scrambling as clock > 300MHz (and we have hdmi_enable_4kp60=1). vc4_hdmi_encoder_atomic_mode_set (without this PR's assignment to mode_changed) is currenly not called so we don't assign: vc4_hdmi->output_bpc = vc4_state->output_bpc which means vc4_hdmi_enable_scrambling never enables scrambling (as vc4_hdmi->output_bpc is still 8). But we do set the pixel clock in phy_init() to a clock frequency that requires scrambling. Signed-off-by: Dom Cobley <popcornmix@gmail.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.